import Vue from 'vue'
import VueRouter from 'vue-router'
import ElementUI from 'element-ui'

Vue.use(VueRouter)
Vue.use(ElementUI)

//解决编程式路由往同一地址跳转时会报错的情况
const originalPush = VueRouter.prototype.push;
const originalReplace = VueRouter.prototype.replace;
//push
VueRouter.prototype.push = function push(location, onResolve, onReject) {
  if (onResolve || onReject)
    return originalPush.call(this, location, onResolve, onReject);
  return originalPush.call(this, location).catch(err => err);
};
//replace
VueRouter.prototype.replace = function push(location, onResolve, onReject) {
  if (onResolve || onReject)
    return originalReplace.call(this, location, onResolve, onReject);
  return originalReplace.call(this, location).catch(err => err);
};

const routes = [
  {
    path: '/',
    name: 'login',
    component: () => import(/* webpackChunkName: "about" */ '../views/login.vue')
  },
  {
    path: '/index',
    name: 'index',
    component: () => import(/* webpackChunkName: "about" */ '../views/index.vue'),
    redirect: '/labelpage',
    children:[
      {
        path: '/labelpage',
        name: 'labelPage',
        component: () => import(/* webpackChunkName: "about" */ '../views/labelPage.vue'),
        redirect: '/recommend',
        children:[
          {
            path: '/recommend',
            name: 'recommend',
            component: () => import(/* webpackChunkName: "about" */ '../views/recommend.vue'),
          },
          {
            path: '/back_end',
            name: 'back_end',
            component: () => import(/* webpackChunkName: "about" */ '../views/back_end.vue'),
          }
        ]
      }]
  },

]

const router = new VueRouter({
  mode: 'history',
  base: process.env.BASE_URL,
  routes
})

export default router
